Anchors



Dec. 13, 1966 J. M. WOOD, JR 3,291,093

ANGHORS Filed March 26, 1965 l0 A INVENTOR.

JOHN M. W000. JR.

ATTORNEV United States Patent ()fiice 3,291,993- Patented Dec. 13, 1966 This invention relates to twin fluke anchors.

It has heretofore been proposed to provide twin fluke anchors having a shank, a stock at one end of the shank, a crown, and flukes which are a part of a rigid assembly comprising all the foregoing parts except the shank. The shank is pivoted so as to swing a predetermined angle on either side of the plane of the flukes.

In my prior Patent No. 3,101,694 there is shown and described an anchor of improved type. The present invention relates to further improvements in the anchors there shown and particularly with respect to simplicity of manufacture and enhancing of the self-cleaning qualities.

It is the principal object of the present invention to provide a twin fluke anchor having spaced flukes which avoid fouling of the flukes or the crown and having an improved crown.

It is a further object of the present invention to provide a twin fluke anchor having an improved crown and crown cheek plates.

It is a further object of the present invention to provide crown cheek plates having front clearance spaces which aid in avoiding fouling.

It is a further object of the present invention to provide a twin fluke anchor having a crown which has a diverging rather than a collecting action upon bottom material, so as to be free from fouling and in which the shank contiguous to its pivotal mounting has clearance spaces on either side of the shank to avoid fouling inside the crown.

Other objects and advantageous features of the invention will be apparent from the description and claims.

The nature and characteristic features of the invention will be more readily understood from the following description taken in connection with the accompanying drawings forming part thereof, in which:

FIGURE 1 is a view in perspective of a preferred embodiment of an anchor in accordance with the invention;

FIG. 2 is a longitudinal sectional view taken approximately on the line 2-2 of FIG. 1;

FIG. 3 is a longitudinal sectional view taken approximately on the line 33 of FIG. 2; and

FIG. 4 is a transverse sectional view taken approximately on the line 4-4 of FIG. 2.

It should, of course, be understood that the description and drawings herein are illustrative merely, and that various modifications and changes can be made in the structure disclosed without departing from the spirit of the invention.

Like numerals refer to like parts throughout the several views.

Referring now more particularly to the drawings, a pair of flukes is provided, right handed and left handed, respectively, of sheet metal, plate, or rolled section and preferably each having a rear marginal edge 11, secured by welding to the stock 12. The stock 12 is preferably a rod or tube of circular or other exterior shape.

Each of the flukes 10 has extending from the stock 12 slightly flaring rear outer side marginal edges 13, of a length of about one third of the length of each fluke 10. Each of the flukes 10, also, preferably has in tapering relation toward the front, straight inner side marginal edges 14 with forwardly tapering flanges 15 above, or below, or both, therealong for stiffening and front side marginal edges 16 extending from the rear outer side marginal edges 13 to the front terminal of the inner side marginal edges 14.

A crown 20 is provided preferably made of one piece of metal with inclined Walls 21 having rear edges 22. The crown 20 is bent or otherwise formed in a V shape with a vertex 23. The included angle between the walls 21 can range from about 45 to The walls 21 have slots 24 extending from the vertex 23, the rear ends 25 of the slots 24 providing limit stops. The walls 21 can be secured to the flanges 15 along their intersections by welding at 19.

The walls 21 have a pair of spaced parallel cheek plates 26 secured thereto as by welding and through which the stock 12 extends and to which they can be welded at their locations of intersections.

The plates 26 have forward marginal edges 27 and rearward marginal edges 28 spaced forwardly of rear edges 22 of the walls 21 to avoid cutting into the deck or providing a location on which someone can hurt his foot.

A shank 30 is provided with an opening 29 for pivoting the shank 30 on the stock 12 between the cheek plates 26. The shank 30 is swingable between limits determined by the ends 25 of the slots 24, and preferably to permit a swing on each side of center of about 30.

The shank 30 has an opening 31 at its front end for attachment of the anchor chain or line (not shown).

The spaces or openings 32, forwardly of the forward marginal edges 27 provide spaces which permit ready dislodgement of bottom material which is not diverted by the angular disposition of the walls 21 of the crown 20.

The anchor heretofore described by reason of the crown 20 will readily engage with the bottom when drawn therealong by a line attached to the opening 31 of the shank 30. The wide spacing of the flukes 11B and the closed front construction tends to avoid fouling of the flukes 10, and of the crown 20.

The welded connections between the crown 20 and the cheek plates 26, between the cheek plates 26 and the stock 12, between the flukes 10 and the stock 12 and between the flanges 15 and walls 21 at 19, respectively contribute to provide a strong, sturdy construction, which also is resistant to bending moments set up by the shank 30 pulling on the stock 12 at the pivotal connection of the shank 30.

The crown 20 is of assistance or digging in of the forword ends of the fiukes 10 but is not of such a size as to unduly resist the entrance into the bottom.

I claim:

1. In an anchor of the twin fluke type the combination of a stock,

a pair of flukes secured along their rear marginal edges to the stock with their inner edges in spaced relation,

a crown between said flukes having a forward vertex and diverging wall plates extending rearwardly from said vertex,

said wall plates each having slots therein bounded by vertical marginal edges and extending rearwardly from said vertex,

said crown having a pair of spaced parallel cheek plates connected to said diverging wall plates and through which said stock extends,

said cheek plates having their forward marginal edges spaced rearwardly from said vertex thereby to provide transverse openings at said vertex, and

a shank pivotally mounted on said stock between said cheek plates and movable in said slots,

the margins of said slots along said transverse opening providing guiding surfaces for said shank.

2. An anchor as defined in claim 1 in which 3 4- said diverging wall portions of said crown are of a single References Cited by the Examiner piece of metal of V shape and has its rear marginal UNITED STATES PATENTS edges 1n widely spaced relation. 3. An anchor as defined in claim 1 in which 2,610,601 9 19 52 Gardmer 114-208 said cheek plates have their forward edges rearwardly 5 2643631 6/1953 Danforth 114'208 of the ends of said slow 3,101,694 8/1963 Wood, Jr 114-208 4. An anchor as defined in claim 1 in which Said fiukes have marginal flanges, and MILTON BUCHLER, Primary Exammer.

said marginal flanges and said crown walls are secured T. M. BLIX, Assistant Examiner.

together at meeting locations. 10 

1. IN AN ANCHOR OF THE TWIN FLUKE TYPE THE COMBINATION OF A STOCK, A PAIR OF FLUKES SECURED ALONG THEIR REAR MARGINAL EDGES TO THE STOCK WITH THEIR INNER EDGES IN SPACED RELATION, A CROWN BETWEEN SAID FLUKES HAVING A FORWARD VERTEX AND DIVERGING WALL PLATES EXTENDING REARWARDLY FROM SAID VERTEX, SAID WALL PLATES EACH HAVING SLOTS THEREIN BOUNDED BY VERTICAL MARGINAL EDGES AND EXTENDING REARWARDLY FROM SAID VERTEX, SAID CROWN HAVING A PAIR OF SPACED PARALLEL CHEEK PLATES 